Fabrik



Nov. 2 1926. 1,605,836

- P. HANEL HYDRAULIC POT PRESS Filed Oct. 18, 1924 2 shuns-51160? 1' I c" I C Fig.4 I

Zaulflihel [Home Patented Nov. 2, 1926.

tlhiiTEQ STATES han ate- 1 0 PATENT f'i li PAUL HZlNEL, OF DBESDEN', GERMANY, ASSIGNOR TO J. M. LEHMANN, MASCHINEN- FABBIK, A FIRM.

HYDRAULIC POT IE'RESS.

Application filed October 18, 1924, Serial No.

This invention relates to hydraulic pot presses, which are especially used for removing the oil from cocoa powder, cons st, as known, of a column of press pots which are open on two sides and receive a piston. Intermediate pieces (press heads) alternate with said press pots. These intermediate pieces serve on the one hand as a cover for the press pots and on the other hand transmit the pressure of the piston to the next following press pot. For the purpose of charging or discharging the press pots, these have to be loosened from their pressure heads, and removed laterally from the column. For the pressing operation, the press pots must be tightly screwed up against their pressure heads. Until now the screwing up and off was necessary for each pot, which by the numerous press pots and the screw places of each pot, required a great deal of inconvenient and lengthy work by the operatives.

According to the invention, the press pots can be screwed up, and released by handling of a driving gear from a single place. The parts of the driving gear are arranged along the press column so that they can operate, during the time the press is not under pressure, on the means for closing the pots against the intermediate pieces, in such a manner as not to hinder the shortening of the column resulting from the pressing of the column. The means for screwing up the press pots can be of different structures and therefore the driving gear can be of different kinds.

In the following, two forms are described, in one of which screws, and in the other, springs are used for closing the press pots. In the first, the screws screw up or off, and in the other, the springs are made efficacious or ineffectual.

This invention consists in. the improvements in hydraulic pot presses, which will be hereinafter more fully described, illus trated in the accompanying drawings and subsequently incorporated in the sub-joined claims.

In the drawings wherein I have illustrated several embodiments of my invention and whereby similar reference characters 744,339, and in Germany November 6, 1923.

designate corresponding parts through the several views Figure 1 is a vertical section; and

Figure 2 is a cross section of a vertical press;

Figure 3 shows a vertical section, and

Figure at a cross section of a vertical press :howing another embodiment of my invention.

Referring to the drawings and more particularly to Figures 1 and 2, the hydraulic piston has fastened thereto the first intermediate piece, or pressure head B.

The press pots are marked with C, C and C and the other pressure heads with B and B i.) is the cross head or abutment of the press, which at the same time, with regard to the upper pot- C takes the place of an intermediate piece and serves as a cover for this press pot. The press pots may be pushed laterally into the slide blocks 0, c and 0 which are guided by the bars 1, and by the members 5 of the driving gear.

In the flanges of the pressure heads 13 and B are rotatably arranged longitudinal bored box-shaped screws 2. These find their female threads in the nuts 3, which are non-rotatably held by the slide blocks. Between the nuts and the base of the bore which contains the nuts, are arranged pres sure springs 4. The screws 2 in the cross head I) act together with their nuts in the slide blocks 0 in the same manner as the screws-2. Through the screws, which lie one upon another, extend the shafts guided along the side of the column. These shafts are by means of slot and key rotatably connected with the screws 2, and 2 to permit relative axial displacement. The shafts 5 are connected by means of bevel gears 6 with a transverse shaft 7, which is also connected by means of a bevel gear 8, with a vertical driving shaft- 9. Shaft 9 is provided with crank wheel and handle. The screws 2 and 2 can therefore be turned by turning the driving shaft for screwing up and off the press pots, while with respect to the relative displacement between the screws and the shafts 5 the shortening of the column B, (1,13 C B C during the with a corresponding; outer thread.

pressing is possible. The springs 4 forming a yieldable counter bearing for the screw nuts 3 allows the compensating of differ head 1'), by springs 10, the ends of whiohaot in the same manner as screw nuts, and are screwed on the hearing which is provided The lower counter bearings are formed by the journal projections of the slide blocks 0, o", and the upper bearings by the box shaped journals 11, which are rotatably arranged in the flanges of the intermediate pieces and the ore" head. The intensity of the springs can therefore be adjusted. The springs will automatically draw or pull the slide bloe ts against the intermediate plates and. thereby pull the pots against their cover pieces, it may be remarked, that it is not necessary that this c awir up or pulling should correspond .w .c intense preslth i sure utilized during the pressing.

For the purpose of loosening the press pots from the intermediate pieces against the action of the springs 10, the graded pressure rods 12 (.XlEZltl on both sides of the column thr ugh the cross head, slide, blocks, and the flanges of .the pressure heads. These pressure rods 12 press during the downward movement with their projections on the slide blocks. The down-pressing oi' the rods 12 taltes place by the transverse movable bar 13, w ich is provided with wedge shaped projcet let, which press on the rounded or ot the rod heads. The bar 13, which has an end formed as a. screw spindle, can be displaced by the driving shatt 9, as one wheel oi? he bevel. gears 8 forms the spindle nut o'i tl bar 13, which extends through a bearing i thebar 1-3 is moved back to it ri -a the wed "e shaped projections the rounded ends of position, the bar 13 permits the rods Q upwa d movement through the bores lo. By releasing the press heads from the i:.termediate pieces by means of the rods the press heads rest on the known graded counter bearings 17.

l have hereinbetore described several embodiments of my invent-ion but do not wish to be limited in the details thereof since changes may be made therein without departing from the spirit of the invention, as defined in the appended claims.

I claim:

1. A hydraulic press comprising a cross head, press pots, intermediate plates having heads vfor the press pots, slide blOClIS for guiding the press pots, shafts disposed through said intermediate plates and the slide blocks, said intermediate plates and slide blocks being movable relatively in a direction axial f the shafts, and resilient means acting between said shafts, intermediate plates and slide blocks and controlled in action by the movement of said shafts.

2. A hydraulic press comprising a cross head, press pots, cover plates for the press pots, hollow screws rotatably mounted in said cover plates and in the cross head, slide blocks for guiding; the press pots, nuts in said blocks threaded on said hollow screws, and shaft-s extending through said hollow screws for rotating the same.

3. In a h .1"dllC columnar pot press, a crosshead, pres pots, flanged intermediate plates with pr s heads, hollow screws rotatably arranged in the flanges of the intermediate plat 1 and in the crosshead, slide blocks for the press pots for guiding the same, cooperating female threads for said hollow screws in the slide blocks, shafts arran 'ed parallel with the column of the pots passi through said screws, means preventing rotation between the shafts and hollow screws but permitting displacement in re spect to each other, and means for rotating the "rafts.

l. n a hydraulic columnar pot press, a crossh-ead, press pots, flanged intermediate plates with press heads, hollow screws rotatably arranged in the flanges of the intermediate plates, and in the crosshead, slide blocks for the press pets for guiding the same, (Jo-operating tcmale threads, and nuts a 1th spring counter bearings for said screws in said slide blocks, shafts arranged parallel with the column f the pet. through said screws, and means pron rotation between the shafts and hollow screws but permitting displacement in respect to each other, and means for rotating the shafts.

In testimony that I claim the foregoing as my invention, I have signed my name hereto.

PAUL HANEL. 

